From 632e1530698eef96993bddcac11f207ee8cc8a9c Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sat, 5 Jan 2019 23:08:01 +1300
Subject: Explain .bashrc $- 'r' flag problem fully

---
 bash/bashrc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/bash/bashrc b/bash/bashrc
index 0400e41d..6e4c31a9 100644
--- a/bash/bashrc
+++ b/bash/bashrc
@@ -4,8 +4,9 @@ case $- in
     *) return ;;
 esac
 
-# Don't do anything if restricted, not even sourcing the ENV file
-# Testing $- for "r" doesn't work
+# Don't do anything if restricted, not even sourcing the ENV file; testing
+# whether $- contains 'r' doesn't work, because Bash doesn't set that flag
+# until after .bashrc has evaluated
 ! shopt -q restricted_shell 2>/dev/null || return
 
 # Clear away all aliases; we do this here rather than in the $ENV file shared
-- 
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